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It has been brought to our attention very recently that we had an omission error in our methods section of the paper . This is Section 3.4, which should have read as follows: The tensile strength, Young's moduli and elongation at break of the 10% hydrogels were determined on an Instron electromechanical universal tester (Model 3342) equipped with Series IX/S software, using a crosshead speed of 10 mm· min −1 and a gauge length for testing of 5 mm. Hydrogels OPEN ACCESSdoi:10.3390/jfb5010027 fatcat:uxkqqb536bcfrianiabm7xdmh4